Pump.



' P'tented Oct. 23,1900.

H. WELCH.

F U M P (Application and un. 1e, 1900.)

(No Model.)

1m: noms vrrcns co. vno'mumn. wAsHmoroN. n, c:4

' which the piston-rod works.

' NITED STATES HERMANN WELCH, OF OSOEOLA, NEBRASKA.

PU M P.

SPECIFICATION forming part of Letters Patent No. 660,136, dated Octobef23, 1900.

Application filed January 16,1900. Serial No. 1,669. (No model.)

To d/ZZ whom t may concern:

Be it known that I, HERMANN WELCH, (whose post-office address isOsceola, Nebraska,) a citizen of the United States, residing at Osceola,in the county of Polk and State of Nebraska, have invented certainr newand usefulmprovements in Pumps; andIdohereby declare the following to bea full, clear, and exact description of the invention,such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to improvements in pumps for use in deep wells',and the main object of the invention is to produce a pump of very simpleconstruction which will be very effective in its operation, wherein allthe work of lifting the water is done on the downstroke of the pistonand no water is lifted on the upstroke thereof, and wherein the weightof the operating parts assists in raising the water, and water will bedrawn into the cylinder as water is forced out at a suitable dischargeor surface pipe.

The invention consists in certain novel constructions, combinations, andarrangements of parts, as will be hereinafter'described and claimed.

In the accompanying drawings, Figure lis a vertical longitudinal sectionthrough my improved pump, the central portion being broken out toshorten the figure.

tion, showing the pump arranged for use as a force-pump, the same partsbeing broken out; and Fig. 3 is a detail View showing a' modified formof the piston and of the means of converting the pump into a force-pump.

A in the drawings represents a cylinder' which is closed at its bottomand top, in which works a piston-rod B, which is hollow and' carries apiston O, which closely lits the said= cylinder. The top or head of thecylinder may be provided with a stuffing-box, through The piston O isprovided with a downwardly-opening valve or valves c. The hollowpiston-rod B extends above the level of the pump-platform a suitabledistance and has connected to it a suitable handle O for raising andlowering the same. A spring, as D, surrounds the pistonrod and isinterposed between a collar b, provided on said rod and thepump-platform, so

Fig. 2 is a' view, partly in section and partly in eleva-v the uppersurface of the pump-platform. A

discharge-pipe extends from the lower end of the pum p-cylinder A,on theoutside of said cylinder, to a poi-nt in the outer casing E, as at e3,by means of which pipe F water is forced into said casing E on thedownstroke of the piston, as shown vin Fig. l. The discharge-pipe F maybe provided with a valve f, which is opened as the pistou descends, sothat the water may be forced into said pipe and is automatically closedas the piston is raised, so as to support the column of water containedin said pipe. A supply or section pipe G extends from a point near theupper end of the cylinder and on the outside thereof into the water inthe well or cistern and is provided with an upwardly-opening valve g,which valve as the piston descends admits water into the cylinder abovethe valves c, which valves are closed as the piston descends. The valveg in the supply-pipe Gis closed as the piston ascends and the valves eare opened, so that the water which was admitted into the piston abovethe valves c will be permitted to pass through the ports in the pistoninto that part of the cylinder below the piston, and as the piston againdescends, the valves c being closed, the water below the vpiston will beforced into the hollow pistonrod E and also out through the su pply-pipeF.

'The construction of the pump as thus far described is, it will beobserved, a single-acting pump, which does all its work of lifting wateronthe downstroke of the pistonand rod, and no water is lifted on theupstroke thereof, and I regard this as an important feature of myinvention, and I maintain this principle throughout all theconstructions illustrated in the drawings and which will be yhereinafter described.

:i 6mes To convert the pump into a force-pump, it is simply necessaryto' close the upper end of the hollow piston-rod and disconnect the samefrom the discharge-spout, as shown in Fig. 2, and employ only thedischarge-pipe F' asthe means of discharging Water from the cylinder,said pipe being extended above the pump:.

platform and made with or connected to a spout F2. In said Fig. 2 theupper end of the hollow piston-rod is closed by means of a cap I, whichalso serves as the upper bearing of the spring D. The same result can beaccomplished by providing a plug .I in'thehol` low piston-rod, asclearly shown inaFigB.` It will be observed that the weight of the rodand piston in descending, which is considerable, will assist in raisingthe Water, and that on the u pstroke of the rod no water whatever islifted, and the lifting of the weight of the rod and piston is greatl-yfacilitated by the spring D.

In Fig. 3 of the drawings I have showna.

slightly-modified construction as to the loca-` tionof the valves inthat the valves'f fortadmitting water into the cylinder are located in`the piston-rod,`as at c c', instead of in the piston. The operation ofthe valvesis precisely the same as in Figs. l and 2. Thevalvesc" c' opendownwardly, and as the piston androd descend the valves are closed, andas the piston and rod ascend the valves are opened and Water is admittedthroughthe same intothe lower part of the cylinder beneath the piston..

Being simple in its construction and` operation and no complicated4parts being, em-

ployed, there is little liability of the pump getting out of order, andwhen necessary re-V pairs can be readily made.`

From the foregoing it willY be seen thatI have provided acombination-pump, which can be worked as a force-pump or not, as theconvenience of the operator orthe exigencies of the case may require.Thepump combines compactness, rigidity, and great lifting:

capacity for the amount of'energy expended in operating the same.

Having non7 described my invention,-.What

I claim as new, and desire to secure by Letters l. A pump, comprising inits construction a l suitable cylinder closed at its bottomand top.

and located above the Water in the bottomof the Well, said cylinderbeing provided with an aperture at or nearits top for the inlet ofWater, a hollow piston-rod carrying a solid piston disk or head whichworks in said cylinder, said piston-rod. being also open attheV bottomso that no water will be caught therein and required to be lifted on the`upstroke thereof, one or more suitable valves provided in saidpiston-rod or piston, a suction-pipe provided with an upwardly-openingvalve,` said valve in the suction-pipe, whenclosed,` supporting a columnof Water above it, the` construction andV arrangement being` such thatupon the descent of the piston, the valve or valves in said piston orrod will be closed `,rod assisting in raising the Water, substantiallyasdescribed.

2.. Azpump, comprising a cylinder closed at `'top and bottom andprovided with an opening at or near its upper end for the admission ofwater, means for Xedly supportingthe said cylinder above the waterin thewell, a hollow piston-rodadapted to work in: said-.cylinder the fulllengthvthereof` and which isalways open at the `bottomso that no waterwill be held innthe. piston-rod and requiredto be liftedonthefupstrokethereof, said rod being providedon its lower end with apiston, out-` hvardly-openingvalves hinged to thesaidl` piston, saidvalves beingw adapted to closelthe openings in. the saidfpiston uponthedownstroke of the piston, andltoibeiopened upon` the upstrokethereof, a-.suction-pipe entering theopening inthe-side lof` thecylinder,. provided with f anupWardly-openingvalve which bpens asthepistonhdescends and` closesas it lrises,.and.supports.a column of Water;above it,.a,stufngbox secured `in4 the head of the cylinder, saidstuffing-boxA being provided.

with` an` opening` Vthrough Lwhich the `pistonvrod` passes, `a collarron said piston-rocha handle connected to the pistonrod,.and aspring`interposed Abetween the collar and the pum p platform, the constructionbeing` such that nowater will be liftedon ther upstrokeq but only on thedownstroke, and the water-lifting operationwill be assisted by theweight of the piston and rod, substantially as described.

3. A pump,.comprising` in itsconstruction.

a suitablecylinder :closed at its bottom4 and topandlocated above theWater in the bottom of the well, said cylinderbeingprovided With` anaperture at or nearY its-top for the inletof Water, ahollowpiston-rodcarrying a solid piston disk or head which Works insaidcylinder, saidpiston-rod being alsoopen at. the bottomso that no water will be caughttherein and: required to be lifted. on. theupstroke thereof, one ormoresuitable-valves provided insaidpiston-rod or piston, a casing orpipe surroundingtheihollow piston-rod above the cylinder and providedwith av spout, a suction-pipe provided withanupwardly-opening va1ve,saidvalve in the suctionLpipe-,.When closed, supporting a. column ofVwatenabove it, adischarge-pjpe outside the cylinder leadingfrom thelower end of the cylinder to the casing. of the hollow piston-rod abovethecylinder, the construction and arrangement beingsuch-that. uponthedescent of thc piston, the valve or valves in said piston; or rodwill ICO IIO

Gentse 1o upwardly on the upstroke of the pistoni and Water will beraised on the downstroke only the Weight of the piston and rod assistingin raising the water, substantially as described. In testimony whereof Ihereunto affix my signature in vpresence of two witnesses.

HERMANN WELCH. Witnesses:

H. T. ARNoLD WM. WELCH.

